Buts its not carbon fiber... carbon reinforced plastic has the NON PLASTIC carbon fiber mixed into plastic to strengthen the plastic.
And what do you think “carbon fiber” has to make it stiff?
The actual carbon fibers have either resin or plastic around them, the term ‘carbon fiber’ is very misleading and is used by the general population to describe both raw fibers and mat as well as carbon reinforced materials, the stuff we have bikes and cars and planes and all manor of other things made out of.
But from a manufacturers point of view the differences between resin and plastic would take a chemist to tell the difference and are effectively indistinguishable to the general public.
Carbon fiber is to resin and plastic as rebar is to concrete. That is, carbon reinforced resin or plastic, and reinforced concrete. You don’t make a bridge out of rebar, you don’t make anything out of ‘carbon fiber’; you make bridges out of reinforced concrete and you could make cameras or anything else out of carbon reinforced resin or
And that was my only point, plastic and carbon fiber are not mutually exclusive when referred to as they were.